
You may look at the top card of your library any time.
You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost.
{T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.
Bolas's Citadel has 10 printings, first in War of the Spark (2019). EDHREC ranks it #278 among Commander cards. It appears most in Y'shtola, Night's Blessed decks (16,030 on EDHREC). It has 8 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.